His fighting strength is very high.

He is known as a trailblazer in that field.

He put on his combat uniform and headed for the battlefield.

The Shinsengumi was a special police organization during the end of the Edo period.

He was observing the distant birds using binoculars.

This area is rich in peridotite.

This mountain is made of tuff.

This rock is gabbro.

He is majoring in petrology at university.

The students lined up in response to the teacher's instructions.